cliff are moving into the oval office at the white house today, no sign that president obama and congressional leaders are closer to a deal. katie marzullo is live in the newsroom with a look at what missing the deadline could mean. >> reporter: the deadline is monday. just the prospect of missing it is causing problems for the economy. president obama has invited senate and house leaders to the white house this afternoon for last ditch negotiation. the house is holding an unusual session sunday. technical little, there's still time to strike a deal, but what if they don't? comedies 31st, more than 500 billion dollars in -- in tax increases and more than 100 billion dollars in government spending cuts are set to take effect. what happens january 1st, is less than certain. if congress and the president miss the deadline investors could panic sending the shakey stock market into a downward spiral. businesses and consumers could lose confidence and cutback on spending. a recession would not be immediate as long as all parties are working on a deal taxes and cuts could be kept at bay for a few wee